Saaremaa (; Ösel in Swedish and German, also, esp. traditionally, Osel in English) is the largest island in Estonia, measuring . The main island of Saare County, it is located in the Baltic Sea, south of Hiiumaa island, and belongs to the West Estonian Archipelago. The capital of the island is Kuressaare, which has about 15,000 inhabitants; the whole island has over 30,966 inhabitants.